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Geochemical logs

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Proceedings Papers

Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-FFF
... permeability model, K-Lambda, estimates the absolute permeability (k) from mineral abundances, which in turn are derived from geochemical logs. The model associates a specific surface area ( S 0 ) with each lithology to calculate the permeability from the surface area-to-volume ratio of the rock. In general...
Proceedings Papers

Paper presented at the SPE Middle East Oil & Gas Show and Conference, March 6–9, 2017
Paper Number: SPE-183883-MS
... given depth of interest was numerically generated. These numerical rock models are constrained by the formation parameters derived from NMR and geochemical logging data, i.e., all input parameters for the geometrical rock model such as the rock density, porosity, grain-size distribution, and grain...
Proceedings Papers

Paper presented at the SPWLA 21st Formation Evaluation Symposium of Japan, October 13–14, 2015
Paper Number: SPWLA-JFES-2015-T
... surface area-to-pore volume ratio. This ratio can be obtained from lithology weight fractions by associating a specific surface area (S0) with each lithology. Quantitative lithology is interpreted in a commercial workflow by using geochemical logs from wireline/LWD tools using Pulsed Neutron Generators...
Proceedings Papers

Paper presented at the Middle East Oil Show, March 11–14, 1989
Paper Number: SPE-17963-MS
...SPE Society of Petroleum Engineers SPE 17963 Applications Using Geochemical Logs by J.L. Colson, Schlumberger Well Services; J.A. Grau, M.M. Herron, S.L. Herron, and J.S. Schweitzer, Schlumberger-Doll Research; R.C. Hertzog* and W.E. Preeg, * Schlumberger Well Services; R.D. Nurmi,* Schlumberger...
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<span class="search-highlight">Geochemical</span> <span class="search-highlight">logs</span> showing <span class="search-highlight">geochemical</span> characteristics of unit I, II and III,...
Published: 20 February 2012
Figure 5 Geochemical logs showing geochemical characteristics of unit I, II and III, (F) northwest, (A) Middle of the basin, (C) southeast ( Belhaj Mohamed, 2008 ). More
Proceedings Papers

Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-DDDD
... ABSTRACT The geochemical logging was introduced to determine the formation compositions over several decades. The newer generation of such instruments adopts a pulsed neutron generator (PNG) and one or multiple gamma ray detectors. The energetic neutrons are emitted from PNG and react...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191411-MS
... A schematic diagram of the geochemical logging tool is provided in Figure 1 . It is normally run as part of a logging string that includes the spectral gamma ray, density, and neutron porosity tools. The key components of the spectroscopy tool include a PNG and a state-of-the-art Lanthanum...
Proceedings Papers

Paper presented at the SPWLA 53rd Annual Logging Symposium, June 16–20, 2012
Paper Number: SPWLA-2012-103
...SPWLA 53rd Annual Logging Symposium, June 16 20, 2012 1 A NEW CAPTURE AND INELASTIC SPECTROSCOPY TOOL TAKES GEOCHEMICAL LOGGING TO THE NEXT LEVEL R. J. Radtke, Maria Lorente, Bob Adolph, Markus Berheide, Scott Fricke, Jim Grau, Susan Herron, Jack Horkowitz, Bruno Jorion, David Madio, Dale May...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 4–7, 2009
Paper Number: SPE-123992-MS
... Abstract A new geochemical logging tool has been developed to provide measurements of elements important to the mineralogical analysis of rock formations and geochemical stratigraphy. The measurement system uses a chemical americium-beryllium neutron source to introduce moderate energy...
Proceedings Papers

Paper presented at the SPWLA 50th Annual Logging Symposium, June 21–24, 2009
Paper Number: SPWLA-2009-40058
... A new geochemical logging tool has been developed to provide measurements of elements important to the mineralogical analysis of rock formations. The measurement system uses a chemical americium-beryllium neutron source to introduce moderate-energy neutrons into the surrounding environment...
Proceedings Papers

Paper presented at the SPWLA 49th Annual Logging Symposium, May 25–28, 2008
Paper Number: SPWLA-2008-KKK
...SPWLA 49th Annual Logging Symposium, May 25-28, 2008 DEFINING CLAY TYPE USING NMR AND GEOCHEMICAL LOGGING MEASUREMENTS B. LeCompte, F. Mendez, D. Jacobi, J. Longo; Baker Hughes Copyright 2008, held jointly by the Society of Petrophysicists and Well Log Analysts (SPWLA) and the submitting authors...
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Journal Articles
Petrophysics 37 (02).
Paper Number: SPWLA-1996-v37n2a2
Published: 01 March 1996
... learning Artificial Intelligence well logging log analysis information fitness function geochemical log data virtual measurement permeability log analyst composition Harvey mineral University log data porosity application neuron Upstream Oil & Gas Formation Permeability artificial...
Journal Articles
J Pet Technol 44 (11): 1176–1183.
Paper Number: SPE-21435-PA
Published: 01 November 1992
...Susan L. Herron; Mario J.C. Petricola; Roy E. Dove Summary Geochemical logs run through a complex carbonate formation yield accurate elemental concentration logs. These are instrumental to the computation of detailed formation mineralogy and derivative properties, such as matrix density and sigma...
Journal Articles
Petrophysics 32 (01).
Paper Number: SPWLA-1991-v32n1a1
Published: 01 January 1991
...R.J. Van Den Oord Analyses are presented of several field tests with the Geochemical Logging Tool (GLT). Investigations were directed towards the assessment of the precision with which the GLT measures in situ elemental compositions and then converts these data into formation characteristics...
Proceedings Papers

Paper presented at the SPWLA 31st Annual Logging Symposium, June 24–27, 1990
Paper Number: SPWLA-1990-U
... based on "indicator logs' have frequently made the theories seem inadequate. It is now possible to compute an accurate Qv log using geochemical logging data, and from this to derive an R0 curve which can be directly compared with measured resistivity to identify hydrocarbon zones. This new...
Proceedings Papers

Paper presented at the SPWLA 31st Annual Logging Symposium, June 24–27, 1990
Paper Number: SPWLA-1990-T
... ABSTRACT Analyses are presented of several field tests with the geochemical logging tool (GLT), a recently introduced contractor tool. Our investigations were directed towards the assessment of the accuracy with which the GLT measures the in-situ elemental composition and then converts...
Journal Articles
SPE Form Eval 4 (02): 153–162.
Paper Number: SPE-16792-PA
Published: 01 June 1989
...R. Hertzog; L. Colson; B. Seeman; M. O'Brien; H. Scott; D. McKeon; P. Wraight; J. Grau; D. Ellis; J. Schweitzer; M. Herron Summary A geochemical logging tool (GLT SM ) string, measuring natural, activation, and prompt neutron-capture gamma rays, produces logs of the most abundant and a few trace...
Images
Representative <span class="search-highlight">geochemical</span> <span class="search-highlight">logs</span>, indicating the general existing source roc...
Published: 12 November 2018
Figure 4 Representative geochemical logs, indicating the general existing source rock parameter distribution determined from rock-eval parameters at present maturation levels, at the location of well Ga-H1, Ga-Q1 and Ga-E1 of the study are within the Southern Pletmos Basin. More

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